Analog PWM generator with 5-V 500-kHz output reference design
Description
This Verified Design utilizes a triangle wave generator and comparator to generate a pulse-width-modulated (PWM) waveform with a duty cycle that is inversely proportional to the input voltage. An op amp and comparator generate a triangular waveform which is passed to one input of a comparator. By passing the input voltage to the other comparator input: a PWM waveform is produced. Negative feedback of the PWM waveform to an error amplifier is utilized to ensure high accuracy and linearity of the output. The OPA2365 op amp: TLV3502 comparator: and REF3325 reference were used to build this design. See more TI Precision Designs
Features
- Utilizes a triangle wave generator and comparator to generate PWM waveformSingle-Supply Solution-2V to 2V input: DC coupled5V: 500kHz PWM output0.22% Measured Gain Error0.108% Measured Offset ErrorThis Verified Design Includes:TheoryComponent SelectionTINA-TI SimulationSchematics and PCB LayoutVerification and Measured PerformanceModification Options
Applications
- Parametric measurement unit (PMU)
Product Categories
- Amplifiers
| Application Area | End Equipment |
|---|---|
| Parametric measurement unit (PMU) | https://www.ti.com/solution/parametric-measurement-unit-pmu#referencedesigns |
| Download |
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| Download the bill of materials for TIPD108 | Download |
Test Data
Get results faster with test and simulation data that's been verified.
Download the test file for TIPD108| Title | Updated | Type | Size (KB) | |
|---|---|---|---|---|
| TIPD108 BOM | 20 Sep 2013 | 61 | ||
| TIPD108 Gerber | 19 Sep 2013 | ZIP | 795 | |
| TIPD108 Schematic | 19 Sep 2013 | 89 |